Lamp



FIG. 1 is a perspective view of a lamp showing my new design;

FIG. 2 is a side view thereof, the opposite side being the same;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The support is broken away in FIGS. 3 and 4 for convenience of illustration. The broken lines in FIG. 6 are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a lamp, as shown as described. 